We could not trace it to an original study with a method.
“88% of business cards are thrown away within a week.”
What we found
The Adobe source is a post on Adobe’s blog dated 26 October 2016. It opens “This post was written by Silkcards”, with the name linked to a printing company’s website, and it gives no source for any of its four figures. CreditDonkey’s statistics page (updated 20 July 2022), the other page people cite, lists that post as its only source.
The same four figures, in the same order, were in a table on Statistic Brain, a statistics website, four years earlier. Its page as captured on 26 July 2012 lists “Percent of business cards handed out that will be thrown out in less than a week: 88%” and names three sources: CNN, BusinesscardABC and Freelance Folder. We read all three in the Wayback Machine. The 2009 CNN article gives no percentage. The 2011 Freelance Folder post, written for the printer MOO, says only “we all throw most of them away”. The nearest match for BusinesscardABC, businesscardsabc.com in 2010, says “more than 90%” are binned “the day they’re received”: a different number, with no source of its own.
Where the trail ends. At the 2012 Statistic Brain table. We found no study, survey, sample size or method behind the 88%, and none showing the opposite either, so the honest answer is that nobody knows. The full chain, hop by hop, is in our trace of the 88% figure.
If you quote itCall it what it is: an unsourced figure from a 2012 statistics website.